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which should show the path to your Rtools installation. Sys.which ( make ) ## C:\\rtools40\\usr\\bin\\make.exe Now try to install an R package from source: install.packages ( jsonlite ， type = source ) If this succeeds， etc) on the PATH. The easiest way to do so is by creating a text file .Renviron in your Documents folder which contains the following line: PATH=${RTOOLS40_HOME}\usr\bin;${PATH} You can do this with a text editor， make， or from R like so (note that in R code you need to escape backslashes): write ( PATH=${RTOOLS40_HOME} \\ usr \\ bin;${PATH} ， append = TRUE ) Restart R， and verify that make can be found。
you’re good to go! See the links below to learn more about rtools4 and the Windows build infrastructure. ， Putting Rtools on the PATH After installation is complete， file = ~/.Renviron ， you need to perform one more step to be able to compile R packages: we put the location of the Rtools make utilities (bash，。